Optionalreplacer: JsonReplacerAn optional user-defined replacer (function or property list) to apply after the circular reference handling.
Optionaloptions: JsonMakeCircularReferenceReplacerFunctionOptionsOptions for configuring the circular safe replacer function, including the placeholder string to use for circular references.
A JSON replacer function that handles circular references and applies the user-defined replacer if provided.
Create a JSON replacer function that safely handles circular references by replacing them with a specified placeholder string.
This function uses a WeakMap to track parent objects during serialization, allowing it to detect circular references and replace them with the provided placeholder. It can be combined with an optional user-defined replacer for additional customization.